It seems expensive for what it is, although it comes with it's own stripped modified bolt carrier/buffer assembly, buffer spring and receiver extension tube so it replaces everything on the back of the receiver. One thing I don't like about it is it makes the take down of the rifle a little more difficult with the integrated bolt carrier/buffer. I don't think it comes in any other colour than the typical NEA flat grey that doesn't match anything. Overall I do like it and it is unique.